root/trunk/common/mvblog_iniparser.php

<?php
/**
 * MvBlog -- An open source no-nosense blogtool
 *
 * Copyright (C) 2005-2008, Michiel van Baak
 * Michiel van Baak <mvanbaak@users.sourceforge.net>
 *
 * See http://www.mvblog.org for more information on MvBlog.
 * That page also provides Bugtrackers, Filereleases etc.
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License Version 2. See the LICENSE file
 * at the top of the source tree.
 *
 * @package MvBlog
 * @author Ferry Boender
 * @version %%VERSION%%
 * @copyright 2005-2008 Ferry Boender
 */

class mvblog_IniParser {
    const TYPE_STRING = 1;
    const TYPE_BOOL = 2;
    const TYPE_INT = 3;

    public static $typeNames = array(
        mvblog_IniParser::TYPE_STRING => "String",
        mvblog_IniParser::TYPE_BOOL   => "Boolean",
        mvblog_IniParser::TYPE_INT    => "Integer",
        );
    protected $availSettings = array();
    protected $settings = array();

    public function __construct($availSettings) {
        $this->availSettings = $availSettings;
        $this->setDefaults($availSettings);
    }

    protected function parse($contents) {
        $values = array();

        // Find and replace dos line endings
        $contents = str_replace("\r\n", "\n", $contents);
        // Find and replace mac line endings
        $contents = str_replace("\r", "\n", $contents);
        // Set section to nothing by default
        $section = "";

        $contents = explode("\n", $contents);
        for ($i = 0; $i < count($contents); $i++) {
            // Look for a section
            if (preg_match('/^\[(.*?)\]*$/', $contents[$i], $match)) {
                $section = $match[1];
            }

            if (!preg_match("/^\s*[#;].*$/", $contents[$i]) && // Comment
                preg_match('/^\s*(.*?)\s*=\s*(.*?)\s*$/', $contents[$i], $match)) {
                $key = $match[1];
                $value = $match[2];
                $values[$section][$key] = $value; // FIXME: Strip 
            }
        }

        return($values);
    }

    protected function setDefaults($availSettings) {
        foreach($availSettings as $section => $data)
            foreach ($data as $key => $value)
                if (array_key_exists("default", $value)) 
                    $this->setSetting($section, $key, $value["default"]);
    }

    protected function setSetting($section, $key, $value) {
        if (!array_key_exists($key, $this->availSettings[$section]))
            throw new mvblog_IniParserException(1, $key, $section);

        $type = $this->availSettings[$section][$key]["type"];
        switch($type) {
            case mvblog_IniParser::TYPE_STRING:
                $this->settings[$section][$key] = (string)$value;
                break;
            case mvblog_IniParser::TYPE_BOOL:
                if (strcasecmp($value, "on") === 0 ||
                    strcasecmp($value, "true") === 0 ||
                    strcasecmp($value, "yes") === 0 ||
                    $value == '1') {
                    $this->settings[$section][$key] = True;
                } else 
                if (strcasecmp($value, "off") === 0 ||
                    strcasecmp($value, "false") === 0 ||
                    strcasecmp($value, "no") === 0 ||
                    $value == '0') {
                    $this->settings[$section][$key] = False;
                } else {
                    throw new mvblog_IniParserException(2, $value, $key, mvblog_IniParser::$typeNames[$type], $section);
                }
                break;
            case mvblog_IniParser::TYPE_INT:
                if (is_int($value) || ctype_digit($value))
                    $this->settings[$section][$key] = (int)$value;
                else
                    throw new mvblog_IniParserException(2, $value, $key, mvblog_IniParser::$typeNames[$type], $section);
                break;
            default:
                throw new mvblog_IniParserException(3, $this->availSettings[$section][$key]);
                break;
        }
    }

    public function getSetting($section, $key) {
        if (array_key_exists($key, $this->settings[$section]))
            return($this->settings[$section][$key]);
        else
            return(null);
    }

    public function getSettings($section = "") {
        //if section is empty return the complete settings array
        if (!$section)
            return $this->settings;
        else
            if (array_key_exists($section, $this->settings))
                return $this->settings[$section];
            else
                return null;
    }
}
?>